diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 017be26..cd0cf56 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ defaults:
 
 jobs:
   build:
-    runs-on: "ubuntu-latest"
+    runs-on: "ubuntu-20.04"
     steps:
       - uses: "actions/checkout@v3"
 
diff --git a/install-purescript/index.js b/install-purescript/index.js
index ab4f3e9..ac6c967 100644
--- a/install-purescript/index.js
+++ b/install-purescript/index.js
@@ -129,12 +129,6 @@ module.exports = function installPurescript(...args) {
 			return cancelInstallation;
 		}
 
-		const tmpSubscription = downloadOrBuildPurescript(options).subscribe({
-			error(err) {
-				observer.error(err);
-			}
-		});
-
 		(async () => {
 			const searchCacheValue = {
 				id: 'search-cache',
@@ -143,10 +137,6 @@ module.exports = function installPurescript(...args) {
 
 			const [info] = await Promise.all([
 				cacache.get.info(cacheRootDir, CACHE_KEY),
-				(async () => {
-					await promisify(setImmediate)();
-					tmpSubscription.unsubscribe();
-				})(),
 				(async () => {
 					let binStat;
 					try {